Carbureter.



W. M. CARLIN.

GARBURETEP.. APPLICATION FILED FEB..19, 1908.

904,508. l Patented N0v.24,1908.

' 2 MEETS-SHEET 1.

W. M. CARLIN.

CARBURETER.

APPLICATION FILED 13313.19, 190s.

9045508. n Patented Nov. 24, 1908.

2 SHEETS-SHEET?.

UNITED STATES PATENT OFFICE.

WILLIAM M. CARLIN, OF INDIANAPOLIS, INDIANA.

Specification of Letters Patent.

GARBURETER.

Patented Nov. `24, 190s.

Application filed February 19,- 1908. Serial No. 416,701.

To all whom'tt may concern:

' Be it .known that I, IVILLIAM Canniiv,

a. citizen of the United States, residing at Indianapolis,'in the' county of Marion and State ofndiana have invented certain new and use fiil Improvements in Carbureters, of which the following is a specification, reference being had therein to the accompanying drawing.

My invention relates to improvements 1n carbureters for use inv connection Withexplosive engines and will be hereinafter de# scribed in the specification and particularly pointed out in the claims.

The object of this invention is to provide* a carbureter into which the 'fluid fuel is directly admitted to be vaporized and mixed with the proper amount of air to form'the vexplosive mixture preparatory -to the admission of this gas iiito the cylinder or cylinders of the gas engine to which said car bureter isconnected; also, to provide a microineter adjusting device whereby the openingl of the fluid fuel admission valve may be i carbureter taken along the line 1 1 in F ig.

4; Fig. 2 is a det-ail View of the micrometer 3 adjusted to a line and accurate degree to -regulatie and adjust the fiow of the Huid fuel into the carbureter; also, to provide means whereby theair admitted into the carbureter may beg-instantly, controlled by the operator, at all times, from his "seat without stopping thev machine', to -increase orV diminish the amount of vacuum in the carbureter, as required.v I attain these objectsby'means of the earbureter illustrated in the accompanying drawings in which'like 'numeralsy of ref-l @rence designate like parts throughout the` vSCVEBIiil views, 1.

Figure 1 is a vertical sectional view of the stop arm; Fig. Sis a top view'of'the same;

Fig. 4 is a bottoniv end viewI of the carbureter; Fig. 5 is a vertical sectional View of the carbureter taken along the line 5-5 in- Fig. e; Figa 6 is a detail broken' view ofthe valve spindle showing the form of the needle- .point thereof; and, Fig. 7 is a detail View of the bell-crank'leif'er looking in the direction of the arrow cil in Fig.

Iivill now proceed to'describe the construction and operation-jef my invention in detail in such clear, and exact terms that others skilled in theart to which it appertains may be able to construct and use the same.

\ r.I his carbnreter is composed of the hollow l cylinder 1, having the enlarged airI inlet bottom end 2, preferably of a bell-mouth form, which is threaded at its inner bottom end portion to receive the threaded rim 34 of the air inlet valve 4 to be removably secured therein.

- The valve seat 4 is provided with the central depending boss 5 which is bored to receive the enlarged portion 6 of the spring compressing spindle 7 so thatt-he latter may be freely moved longitudinally therein. A metallic valve disk 8 is bored at its central portion to loosely fit on the spindle 7 to freely slide thereon and a cushion valve 9, vconstructed of a flexible or yielding material,

peripheral edge of said valve disk 8 into-thev interior of and-through the cylinder 1.

A sleeve 11 is bored to loosely fit on the s eeve is provided with the conica-l head 12 the purpose of which will be hereinafter described. The flat largerend or ba-seof the conical head12 is soldered or. otherwise secured centrally on tlie top side of the valve disk 8, so that the latter will be maintained s indleto freely slide thereon and said in horizontal position or at right angles to saidspindle 7 when sliding thereupon.

On the' top end of the spindle 7 is situated a cone 13 whicliisloosely fitted on the nally thereonfand :in-adjusting nut 14 is end' of saidspindle'to be moved longitudiscrewed onv-the threaded end of said spindle whereby said y'cone is adjusted and midntained in adjusted position onsaid spindle A coil spring 15 surrounds the spindle 7 and is adapted to-bearat its bottom end on the cone 12 and at its top end against the cone tained concentric with said spindle and prevented .froni contacting therewith to avoid friction and provide a free action of said spring. A bell-crank lever having the arm.

1 6 and the arm 17 formed in one integral piece is pivoted to the lug 18 formed on the ring 19 which latter is removably-secured on the vouter threaded'- portion ,of `the-enarm 17 of said bell-crank lever is provid`ed' with the fork 2O the bottom bearing edges v13, so that said coil springmay be main- 21 ,of the bifurcations of which are curved so' as to bear centrally of the collar 22, secured on the end of the enlarged portion 6 of the spindle 7, in all positions, and the end vof the arm 16 is connected by a suitable connecting rod, as the connecting rod 16a, to the bell crank lever 16b on the steering shaft 164 youd the outerl perip of the automobile in which the engine may be -situated so as to be readily and convenientlyo rated byv the driver.

.Thot uid fuel duct 23 is formed integral Wththe cylinderl and extends diametrically `therethrough to ery of said cylinder, and T'said duct issituated intermediate the .top and bottom ends of the latter and above tudinalbore into which the needle valve` `Spindle 25 is fitted to slide freely in a longitudinal direction. jN'ear the bottom end of the valve spindle guiding sleeve 24 isformed the needle valve seat 26 to vwhichthe needle valve 27 of the needle valve spindle 25 is fitted to form a ,close joint and tofcoact therewith, and in said sleeve above'said valve seat are formed the outlet openings 28 through which the fluid fuel, l admitted by 'said needle valve,

passes into the-interior of the cylinder 1 4to be vaporized and taken .up by the current of -air Iiowing through the interior of said 'cylinderf The baffle disk 29 is secured centrally on the 4top portion of the needle valve spindle25-,with its top side contacting'with the shoulder'of the stop-head 30 thereof, and

said 'disk'is provided to'intercept the current of air passing through the cylinder 1 for the purpose of operating the valve spindle 25 to lift the :needle valve 27 off its seat 26 -which operation takes'place only while air is being drawn'into the interiorv of the cylinderl by theI en `e cylinders.

The ottoni end portion of the spindle 2,5, i situated above the needle valve1271ss1ight1vg reduced so that the fluid fuelY assing throng the valve opening 31 may ow' freelyT into the clearance space thus formed above'. Athe valve seat 26 to the outlet openings 28. l

' The fluid fuel'duct 23 is provided' with the larger bore 23a through which the iuid fuel is admitted to the valve opening 31.

. The top end of the cylinder 1 is provided with the cover 32 which is threadedlat the outer yperiphery of its flange 33 to be screwed into the threaded portion of the top end ofv the cylinder 1, and said cover is provided project at its ends be' with the centrally depending boss 34 and the upper central boss 35 having the upper reduced portion 36. Asbore 37 extends centrally of the -reduced'portion 36 of the boss 35the boss 35, and partially into the `depending boss 34 and the said bore is threaded to receive the threaded portion'38' of the.v

stop spindle 39. The lower portion ofthe depending boss 34 is bored toreceive 'the lower reduced stop spindle'39 the lower end of which projects below the lower` endl of said boss 34 to almost touchthe top end' of Y.

the stop head 30. A light coil yspring 4()` surrounds the stop head 30 and the bottom reduced spindle 39 and is adapted to bear at its top end against the bottom end surface of the depending boss 34, and at its bottom end.,

on the top surface of the baffle disk 29, and lsaid spring is provided for the purposeof retaining said needle valve 27 on its seat 26 in such cases as when the carbureter vis vplaced in an inverted position, or to prevent said valve from rising of its seat by the vibration or jar of the machine in which the'engine may be situated.

On the top end of the threaded portion 38 of said stop spindle is secured a-disk- 41 which is finely notched at its peripheral edge into which the retaining tongue il of. the spring arm 43 is ada ted to fit to pres vent a free rotation of sa1d disk 41 and the stop spindle to which it is secured, whereby said stop spindle is set to adjust and regulate the lift of the needle valve 27 above its seat 26, by 'which means the lift of said valve may be adjusted manually to one thousandth v part. of an inch by the sound or click of the I tongue 42 entering one of the peripheral `grooves of the disk 41.

The spring arm 43y is rovided with the foot 46 which is bored'to ooselv fit over the threaded reduced portion 36 of the boss 35,

and a nut 47 is screwed von said reduced threaded pfortion to tightly secure said foot 46 to maintain said spring' arm V43 in position, sothatsaid` retaining tongue 42 shall at all times enter onel "of thev notches of the disk 41. l

The lock nut `be screwed on the threaded portion 38 of the 44 is bored and threadedto i stop spindle, andthe said nut is provided j @with a lever handle 45 whereby 'said lock nut isturned to lock said stop spindle in its adjusted sition to limit the lift of the needle valve2.

Before starting the engine to which a carbureter is connected, itis 'necessary to admita small quantity lol thel Huid fuel into the interior ofv .the carbureter or into the interior of the cylinderv 1, sov that the fluidfuel may be vapori'zedto fill'not only the interior of the carbureter itself but also toill the pipesintervening the carbureter and the valves of theqengine tof-which said carbureter is connected, for., this purpose, kI prosaid duct andthrough the bore of the packing t cap 53, which'latter is secured on the thread--v ed projecting end 52 of said duct, and the said cap is provided to compress a suitable packing material around ,the projecting end of the spindle 53 to preventa leak of the Huid fueL A removable collar 54 is securely screwed or otherwise secured on the reduced portion 55 of the spindle 50 and a coil spring 56 surrounds the projecting end of said spindle 50 and is situated between the removable collar 54 and the packing cap 53.

Outlet openings 57 connectwith the reduced bore 51 of the duct 23 and the same are provided for the purpose of permitting -the fluid fuel to drip into the interir of the cylinder l when the valve 49 is moved from its seat l48in such cases, as when it A isrequired to introduce a quantity of the fluid fuel into the interior of the carbureter sufficient toprovide enough Vapor to start the engine.

The. elbow 58 is :formed on the 'side ofthe cylinder 1 near the top end thereof, and the same is threaded to receive the threaded end ofthe throttle pipe 59. The throttle pipe. 59 is provided -with an enlarged center portionV 60, which is situated intermediate y, 1ts ends, and the throttle spindle 61, to which the throttle 62is'secured, has its bottom endportion journaled in the st ep bearing 63 formed in the enlarged portion 60 situated'at the lower side of the throttle pipe 59, and said spindle projects upwardly through the top bore of said top enlarged Y portion andtheboss 64 formed thereon, and

on the prolonged outer portion of said spindle is secured a lever arm 65, to the free end of which latter, may be connected a connecting rod, which connectsv said arm to a suitable lever situated on the'steering shaft of an automobile, so that the operator there' of may manipulate said throttle as the Work- -ing conditions of saidenginemay require.

The operation of the carbureter is as -follows The valve 49 is first opened by pressing the collar 54 to admit a small quantity of the fluid fuel into the interior ofthe cylinder 1, which drips down upon the top surface of the valve 8 to be evaporated and taken up by the incoming-air. The engine, to Whichithe carbureter is connected, is next cranked around to create a vacuum in the interior of the cylinder 1, and the connecting pipe'thereof, to cause a current of air to pass through the air inlet openings 10, -Which current takes up and absorbs the 'vapor evaporated from the iuid fuel admitted into said cylinder. The explosive mixture thus formed passes upwardly in the interior of the cylinder l to and through the throttle pipe 59, thence throughthe connecting pipe connecting said throttle pipe 59 and the cylinder of the engine, to. charge said cylinder with the explosive iuid with which to start the engine in motion. The A `current of air, in its passage through the carbureter, contacts with the bottom surface of the baille` disk 20, secured on the valve stem 25, to lift it and the needle valve 27 to which it is connected, oi its seat'to admit fluid fuel into the interior of the cylinder 1 there to be vaporized and mixed with the current of air passing therethrough tov form the proper explosive mixture which passes on through the throttle pipe 59, through the,

connecting pipe to the engine cylinder, there to be exploded vin the usual Way. The supply of the explosive mixture may be controlled by the throttle valve 62 when desired.

- When it is desired in the carbure'ter, the operator moves the spindle-7 downwardly by `means of the mechanism, connecting it -to the steering shaft, to compress the coil spring 15, so as to apply a greater resistance to the vvalve disk Sand lts cushion valve 9 to reduce or restrict the raising of vthe latter valves to diminish the supply of air through the valve openings 10 into theinterior of the cylinder 1, thereby increasing the flow of the fluid fuel through the valve opening 31 to be vaporized and mixed with the reduced volume of air to enrich the latter.v

The needle valve spindle 25 has'a very limited motion which is increased or diminished by means of the stop spindle '39 which latter may be 'adjusted to a fine. degree to -fx the clearance between thestop end of the spindle 39 and the top .end ofthe stop head'BO of the valve' spindle 25 by means of the micrometer screw 33 and the collar 41, whereby the exact lift of the needle valve 27 may be, at all times, predetermined and set to 'an exact distance.

I elaimz'- l l. In a carbureter, the combination with a hollow cylinder having its top end closed and its bottom enlarged end open, an air in'- let valve situated over said enlarged open bottom end, a mechanism connecting said valve and the steering shaft of the vehicle wherebythe valve closure is eected to control the Vacuum in said cylinder, and an outlet situated" near said top closed end, of said cylinder of a fluid fuel duct situated intermediate the ends of said cylinder, and having'an to increase the vacuum top end,and an inlet valve covering said botmechanism and the steeringl shaft of thej adapted toengage the'notehes of said disk A cally from said duct and situated centrally .nally therein, a needle valve on the end 'of'- nsaid spindle coactingtwith said'eeat, anda i disk situated atthe to portiongof spin*` dle and connected t ereto, said diskfb smaller diameter than the interiorl diameter said cylinders, of a `fluid. fuel duct extending i intermediate the closed top and air inlet lbot- '30 j exteriorl of said c linder, a needle valve l v.upper side of said duct and centrally vsitu-v .ated at t l 'the latter is raised bythe current of air, said 'valve on the 'lower-end of said spindle coacting wlth :said seat",astop spindle situated .said valve'spindle, said stop s indle'screwed ing leverserewed on `said spindle and situ- 'disk' on theendqf--saidspindle having pe` .tting the bore of said Aboss to slide longiinlet end situatedexteriorly ofsaid cylinder, a needle valve sleeve guide extending vertif ofthe interior of said cylinder, said guide .sleevehaving a fluid fuel outlet, a valve seat situated at the bottom of the bore ofsa-id guide sleeve and a needle' valve spindle fitted into said guide sleeve to slide-'along longitudiof said cylinder. y I

2. In a carbureter, the combination .with'aY hollow -cylinder vertically situated having its top end vclosed and its bottom enlarged end open, an outlet opening situated near its tom enlarged open end, a valve guide spindle..- extending interiorly of said cylinder, a valve controlling spring srroundin saidl spindle,4 and mechanism connecting sai valve spring vehiclewhereby the tension of said.. valve sprlng is controlled to vary the vacuum in diametrically of said cylinder and situate tom'ends-thereof and having an inletfend guide sleeve exten ing vertically from the ated'- in the interior fof said cylinder said guide sleeve having 'a 'fluid fuel outlet, a valveseat situated. at the bottom of the-bore of said guide sleeve, a needle valve spindle situatedin said guide sleeve cylinder" to lslide lon'itudinally therein,` a baliiedisk situe, top end ofsaid spindle whereby battle disk oflsmaller diameter than the interior diameter of said cylinder, a needle vertically andcentrally overthe top end of into the closed end of said cy inder, a lock;

ated exteriorly; of said to closed en d, a

ripheral notches,and a spring arm having a retainlng 'tongue' situated at its freeend and -andhaving primin tudinally therein, a surrounding said e opening thereof, mechanism'connecting said spindle and the steeringshaft ofthe vehicle whereby the ,tension ofsaid spring spindle and bearing on said valve to control t is varied to increase or diminish the vacuum inthe cylinder, of a fluid vfuel duct extendingdiametrically into vthe interior of said;

cylinder and'situated intermediatethe closed --to end and the air inlet bottom end of said "cy inde1,.said duct havingfailuid fuel inlet fend situated exteriorly of," said cylinder,. a u needle valve spindle guide sleeve extending vertically'. from the 'upper side of said. duct and situated vcentrally of the interior of said *cylinder said! guide sleeve having a fluid A`fuel outlet, a'valveseatsituated at the bot tom of the bore of said'` guide sleeve, a needle valves indle fitted yinto the b ore of said guide s eeve to slide longitudinally therein, a needle valve coacting with said valve seat,V

a; baille disk situated -at the-top end of said spindle whereby the latter is raised longitudinally by the current of air, a stop spindle situated vertically and centrall over the top end of said valve spindle, a disk on the ytop endof said stop spindle, and a spring arm havin .peripheral stop notches extending upwar ly and'cont'acting at its free end with said 'diskyand a retaining1 tonguefsituated on said spring arm an adapted to engage the notches `of said vdisk whereby the spindle is held-in any desired set position.

4.,-'In a carbureter, the combinationwith a hollow cylinder 'having its top endfclosed inlet valve situated over said e' arged open bottom en'd, an 'outlet situated near's'alid top ,Closeden'd'of said. cylinder, a luidfuelduct vsituated'intermediate theends of said cylinder saidduct having longitudinallyextend! w ingsbores of different diameters ,connecting at a point intermediate the ends ofthe duct? .tend from the smal e said cylinder,'a needle .valve guide-sleeve, a valve seat situated atthe bottom of the bore of said guide-sleeve, a .needle valvettedfto slide longitudinally insaid sleeve and coacting with said-Seat, of a valve seat situated in the larger bore at' the'junction -ofthe larger 'and smallerzboresof said duct,A a priming valve infsaid. larger 'bore coacting with said seat, a valvespindle extendin from said priming valve through sai In testimon whereofl afiix my signature in presence ol twojwitnesses.'

' M; CARLINJ- Witnesses;

THOMPSON R BELL, ORLANDO C'. Forms.

olenings situated to ex... r ore to the interior of 12o smaller bore to project beyond the open endvof said duct, andal retainin spring-,tor retaining said priming valve c osed. z 

